Process of manufacturing chain-links.



J. M. DODGE.

PROCESS OF MANUFACTURING CHAIN LINKS.

APPLICATION FILED MAB..13, 190B.

921,519; Patented May11,1909.

D2291]. H II 4 JAMES M. DODGE, Olf' PHILADELPHIA, PENNSYLVANIA.

PROCESS OF MANUFACTURING CHAIN-LINKS.

Specification Letters Patent.

Patented May 11, 1909i Application filed March 18, 1908. Serial No. 420,902.

To all whom it may concern:

weldedtogether; the link can then be com- Be it known that 1, JAMES M. DODGE, a pletely fuiished and the roller applied aftercitizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in the Process of Manufacturing Chain-Links, of which the following is a specification. 4

' One object of my invention is to construct a chain link by building it up in sections and securing the sections to ether by welding, prefera ly by electric we (ling, so as to form a single integral unit.

Infthe accompanying drawing Figure 1, is a longitudinal sectional view on the line 1-1, Fig. 2, showing a section of the chain of my improved chain link; Fig. 2., is a longitudinal sectional view on the line 22, Fig.

1; Fig. 3, is a view showing the several elements of the link detached; and Fig. 4, is a view of part of a chain made in accordance with my invention.

'A is the chain link consisting'of side plates (1, a and an intervening member (1 connecting the side plates. Usually this intervening member is made in one piece and is forced 1nto the Openings 1n the side members a, a. This method of manufacture, however, weakens the link at the eyes so that to obtain the proper strength the links have to be increased in size at each end. By my invention I secure the intervening member to the sides of the side plates by welding so that the hole in the side plates a, c is of the same diameter as the hole in the intervening member, thus it is not necessary to increase the size of the link at this point. I preferably make the intervening member of a number of sections c, Fig. 3, and which are punched from a plate and can be readily assembled when it is desired to weld the parts together. In the event of electric welding I preferably form any number of small projections on the members e so that there will be a point contact and then one part can be readily welded to another by electric welding until the chain link is built up as shown. If a roller B is to be mounted upon the chain link then before the last section of the link is welded to the others the roller is slipped into position and the last section-welded. Insome instances ward.

O, C are two links which are attached to the link A in the ordinary m'anner'by the pin in the sev- D which passes through openings eral'links and ma be fastened in place by a cotter in or other suitable fastening. I prefera lv make the pin D in two arts (1, d

and' one of these parts is preferaby'harder than the other; the two parts being welded. together so as to make a onepart pin with a hardened portion which is so situated as to, take the wear.

The construction of the pin is fully set forth and claimed in a divisional application filed March 2nd, 1909, under".

Serial No. 480,981.

The pin is preferably prevented from turning in the links 0 in any suitable manner when it is made in two arts, as shown, so as to present the hardene surface to receive the pressure of the link A.

It will be understood that there can beas stances the intervening member a instead of being made up in sections e may be only .asingle piece welded to the two side members a, a.

many sections e as desired, and in some in- V By the above described construction I can make a very substantial link having the same strength as the ordinary link and econ- 1 omizingin the use of metal, as the welding of the intervening member to the sides of the link reinforces the sides, making a very substantial construction.

The (parts canbe readily and cheaply as-v semble so that a: link made in accordance with my invention will be as economical,

considering the strength, as any linknow in USB.

1. The process herein described of manu} factoring a chain link, said process cdnsisting 2. The process herein described of making a chain link, said )rocess consisting in mak-'- ing two side mem ers and perforatlng them,

-- then'pundhing and forming a series of ele- In testimony whereof, I have signed my ments "to produce an intervening member, name to this specification, in the presence of .unitin'g one of said elements to the side sectwo subscribing witnesses. tion by welding, building up acentral section JAMES M. DODGE.

5. by adding the series of punched elements one Witnesses:

at a. time, andfin'ally uniting the other side WM. A. BARR,

' "sections to the built up intervening member. Jos. H. KLEIN. 

